<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>tip</title>
</head>
<body>
<h1>出错了，请联系管理员哦！</h1>
<hr>
<div th:text="${yichang}"></div>
</body>
</html>